Aug. 31, 2021
RCQM/Frontier Condensed Matter Physics Seminar
Description
SPEAKER: Jia-Xin Yin (Princeton)
TITLE: Quantum triology in charge ordered kagome superconductors
LOCATION: Online – Zoom
SPEAKER: Jia-Xin Yin (Princeton)
TITLE: Quantum triology in charge ordered kagome superconductors
ABSTRACT: The intertwining of lattice geometry, competing orders, and electronic topology is at the quantum frontier. Such a quantum triology has recently been discussed in the kagome superconductors AV3Sb5 (A = K, Cs, Rb). The van Hove singularities originating from the kagome lattice give rise to a high-temperature charge order, exhibiting dual electronic and magnetic anomalies. The charge order further interweaves with a tantalising unconventional superconducting phase. Both orders exhibit intricate connections with the underlying topological band structure, featuring Dirac fermions. This triology in kagome superconductors is inspiring manifold experimental and theoretical advances some of which exhibit common threads with the quantum anomalous Hall effect and the hidden phase in high temperature superconductors. I will discuss the status quo understanding of these instabilities that emerges from recent studies, with a particular focus on our scanning tunneling microscopy observation of the chiral charge order.
Date and Time
Tue, Aug. 31, 2021
2:15 p.m. - 3:15 p.m.
(GMT-0600) US/Central